CVE-2021-34421 describes an incomplete cleanup vulnerability in Keybase Client for Android and iOS versions prior to 5.8.0. This flaw allows "exploded" messages, intended for deletion, to persist on a recipient's device if the chat session is backgrounded during the sender's deletion attempt, potentially disclosing sensitive information. Rated Medium severity (CVSS 4.3), it requires user interaction (UI:R) and network access (AV:N) but has low impact on confidentiality (C:L). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has garnered minor community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
5.8.0CPE matchmatch criteria | cpe:2.3:a:keybase:keybase:5.8.0:*:*:*:*:android:*:* | ||
5.8.0CPE matchmatch criteria | cpe:2.3:a:keybase:keybase:5.8.0:*:*:*:*:iphone_os:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.